Epson AcuLaser C8500 Service Manual page 294

EPSON AcuLaser C8500
Table 4-8. Digital Input Test Device Code
Digital Input Test [DIAGSTART : [90 02 XX] , DIAGSTOP : [91 02 XX] ]
Code
When status data is
Name (Hex)
TONER 67 CARTRIDGE
SENSOR
_EMPTY_SNR
CARTRIDGE SENSE
Signal : High
PH_MOT_FAIL 70 FUSER MOTOR
ASSY
FAIL F Signal : High
PH2_MOT 71 P/H MOTOR ASSY
_FAIL
FAIL P Signal : High
PR_MOT_FAIL 72 PROCESS DRIVE
ASSY
FAIL Signal : High
Chapter 4 Diagnostics
Function Item
[High] Check Method
After turning ON [LOW]
the SENSOR ON signal
at Digital Output Test
[75], check by using paper to
switch between light present
and light absent states at the
Sensor.
After checking by
switching between
connected and
disconnected states at
the DRIVE MOTOR
PWB connector(P/J49),
check by turning
ON[LOW] the FUSER-P/
H MOTOR ON signal at
Digital Output Test[53].
After checking by
switching between
connected and
disconnected states at
the DRIVE MOTOR
PWB connector(P/J49),
check by turning
ON[LOW] the FUSER-P/
H MOTOR ON signal at
Digital Output Test[53].
After checking by
switching between
connected and
disconnected states at
the PROCESS DRIVE
ASSY connector(P/J51),
check by turning
ON[LOW] the PROCESS
MOTOR ON signal at
Digital Output Test[54].
Table 4-8. Digital Input Test Device Code
Digital Input Test [DIAGSTART : [90 02 XX] , DIAGSTOP : [91 02 XX] ]
Code
When status data is
Name (Hex)
FRONT_DOOR 73 FRONT COVER
SWITCH R
_SW
FRONT COVER
SWITCH ON Signal :
High
TOP_DOOR_SW 74 EXIT CHUTE
SWITCH
EXIT CHUTE
SWITCH ON Signal :
Signal : High
MSI_SIDE 75 MSI GUDE SWITCH
_GUIDE_SW
MSI GUDE SWITCH
ON Signal : High
2BTR_PHT 76 BTR WHEEL
SENSOR
_SNR
BTR WHEEL SENSE
Signal : High
REGI_UNIT 77 REGI/MSI INTL SW
_SNR
REGI/MSI INTL
SWITCH ON Signal :
High
OPT_SORTER_R 80 Option Sorter
EADY
SORTER READY
Signal : High
INTLK24 82 24VDC to MCU PWB
24VDC(between
LVPS and MCU
PWB) : High
Revision C
Function Item
[High] Check Method
Checking by opening
and closing the FRONT
COVER ASSY.
Checking by opening
and closing the EXIT
UPPER ASSY.
Checking by opening
and closing the MSI
REGI.GUIDE.
Check by using paper to
switch between light
present and light absent
states at the Sensor.
Checking by opening
and closing the MSI/
REGI HAIGH ASSY.
Check by switching
between connected and
disconnected states at
the connector (P/J133)
of Option Sorter unit and
the printer.
Checking by opening
and closing the FRONT
COVER ASSY. (Even
MSI/REGI HIGH ASSY
or FUSER ASSY is
acceptable.)
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